Valve mechanism



Feb. 27, 1934. A, J, PENICK n AL VALVE MECHANI SM Filed Nov. 25, 1929 L w wl) 8 @a www, a, /0 wv ,m 4 L7M f N. 9N

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p 1,948,828 VALVE V,ivnicnualsiu Arthur J. Penick and Kirby T, Penick,

` Houston, Tex.

Application November 25, 1929 serial 10.499541 1 Claim. (Cl. 251-144) This invention relates to new and useful provements in valve mechanism.

One object of the invention vis to provide a valve mechanism of the character described spe-.

-cially adaptedk for use .'inipumps such as slush pumps for handling gritty material and embodies a novel type of valve as well as a novel type of seat with which the valve cooperates.

Another object of thel invention is to provide in a valve mechanism a seat having a ring thereon formed of rubber or similar yieldable material against which the valveis adapted to seat and which has a yieldable margin -which will conform to and t closelyagainst the opposing face of the valve so as toat all times form therewith a fluid tight joint to prevent leakage.

Another object of the invention is to provide in a mechanism of the character described, a

, valve having a. detachable'ring arranged to cogo operate with the valve seat and which may be readily removed and replaced `gwhen it becomes worn out. 4 y

With the above and other objects .in view the invention has particular relation to certain novel featuresof construction, operation and arrangement of parts, an example of which is given in this specification and illustrated in the accompanying drawing wherein:

' Figure l shows a side view of the mechanism,I

partly in section as mounted in a slush pump.

Figure 2 shows a vertical sectional view of 'a modified form of the valve seat and y Figure 3 shows a fragmentary vertical sectional vew of another form thereof. l

Referring now more particularly to the drawing, wherein like numerals designate similar parts in each of the figures the numeral l designates a slush pump as a whole, which has a transverse horizontal partition 2 therein which separates the intake chamber beneath the valve mechanism from the discharge chamber 3 above said valve'mechanism. In the partition 2 there is driven, or otherwise secured, a valve seat 4 whose upper end is ared. This seat -is formed of rigid material and around its' upper end there is a ring 5- formed of rubber or some other yieldable material having the flared face 6 which has a slightly less flare than the ilare of the seat proper. The upper end of the valve seat 4,l is reduced formingthe annular shoulder 7 on -which the ring 5 is seated. The ring` 5 surrounds said reduced portion and has an inside annular rib 8 at its lower end which fits into a corresponding groove 9, in the reduced portion of said seat.-

'Ihe ring `5 may be expanded andy fitted over the reduced* upper end of the seat l4 and-then released to seat the rib 3 in the groove 9 and the ring will thereby be held in position. A In th'e form shown in Figure 2 the ring' 5ais i formed and' mounted in substantially. the same 50 manner as shown in Figure 1. In the form shown in Figure -2 there is a non-expansible band 1p around the lower portion of the ring 5a whose upper edge is substantially flush with the upper edge of the ilared portion of the seat 4. In the form shown in Figure 3, there is a band 10 surrounding the yieldable ring 5b which is formed integrally with the seat 4 and whose upper edge p is substantially iiush with the upper edge of the aredA portion of said seat.A It will thus be obm` served that the upper edge 11 of the yieldable seat 5, 5a or ,5b is free to yield under the action of thvalve 12 there against and wear and friction of the valve against the seat will not be so severe as would be the case were said yieldable 75 ring backed by afnonyielding backing. The ring 5, 5a, 5b will therefore be free to conform to vthe contour of the valve l12 and should any clogging material be caught between the ring and valve, said ring will have a certain amount of resiliency so to enable the ring to conform to the irregularity and to form a close fit with the valve. There is a ring 13, secured to the under side of the valve I2 and having the'tapering face 14 to conform'to the contour of the valve seat, and to cooperate 35 therewith. This ring is seated in a groove 15 in the underside of the valve proper and is secured therein by suitable bolts, as 16.

In the seat 4, beneath the valve, there is a spider 17 having the central bearing 18 throughA g@ which the depending stem 19 works, and upf standing from the valve there is a stem 20 which works in the guide 21, located in the pump above said valve. VIf desired, a coil yspring 22 may be placed around the stem 20 and .interposed beg5, tween said guide' and valve to assure the seating of the valve. This Jspring however is not indispensable as ordinarily the valve will close under the influence of gravity.

As stated the flare' or pitch is somewhat less than the flare, or pitch, of the upper end of the seat as shown in Figures 2 and 3. When the valve seats against said ring it will first contact against the upper edge or apex 11 and cause said edge to yield outwardly before the The drawing and description disclose -what is now considered to be the preferred form of the u of the ring 5, 5a, 5b i0@ invention by way of illustration only, while the broad principle oi' the invention will be defined by the appended claim.

What we claim isz- A valve mechanism comprising a reciprocable valve having an annular beveled face, an annular valve seat having outwardly ared annular face opposite, and adapted to cooperate with. said valve face, `a ring of resilient materiallaround and counter sunk into the valve seat andhaving an outwardly flared face which terminates in an annular lip which lies in a plane which iselevated beyond the plane of the seat face wherebys upon closing movement of the valve, the valve face will contact with said lip in advance of the complete seating of the valve on said seat, said seat having an external annular groove and said resilient ring having an linternal annular rib which seats in said groove andalso having an external annular groove and a bandaround, and counter sunk into, the base portion of said ring which secures the ring in place but permits the expansion of the lip portion ofthe ring, said band having an inside annular rib which seats in the groove of said ring.

` KIRBY T. PENICK.

ARTHUR J. PENICK.

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